Glen Park Formation, stratigraphic locality 392 (Horton Creek), Pike Co., IL, Ea: Tournaisian, Illinois

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Nigeroplica ? illinoisensis
Rhynchonellata - Athyridida - Athyrididae
Composita matutina
Rhynchonellata - Spiriferinida - Syringothyrididae
Syringothyris extenuata
Rhynchonellata - Spiriferida - Ambocoeliidae
Crurithyris cf. levicula (Rowley 1900)
Rhynchonellata - Spiriferida - Martiniidae
Eomartiniopsis kinderhookensis
Rhynchonellata - Spiriferida - Spiriferidae
Parallelora nupera
Rhynchonellata - Spiriferida - Brachythyrididae
Brachythyris hortonensis
Rhynchonellata - Spiriferida - Elythidae
Kitakamithyris cooperensis
Rhynchonellata - Orthida - Rhipidomellidae
Rhipidomella rockportensis
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria hortonensis
Rhynchonellata - Rhynchonellida - Rhynchoporidae
Rhynchopora hamburgensis
Rhynchonellata - Rhynchonellida - Petasmariidae
Shumardella fracta
Strophomenata - Productida - Monticuliferidae
Ovatia nascens
Strophomenata - Strophomenida - Rugosochonetidae
Rugosochonetes cf. gregarius
Plicochonetes ? glenparkensis
see common names

Geography
Country:United States State/province:Illinois County:Pike
Coordinates: 39.6° North, 91.0° West (view map)
Paleocoordinates:21.7° South, 36.9° West
Basis of coordinate:based on political unit
Geographic resolution:outcrop
Time
Period:Carboniferous Epoch:Mississippian
Stage:Tournaisian 10 m.y. bin:Carboniferous 1
*Period:Early/Lower Carboniferous *Epoch:Early/Lower Tournaisian
Key time interval:Tournaisian
Age range of interval:358.90000 - 346.70000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Glen Park
Local section:392 - Horton Creek
Stratigraphic resolution:group of beds
Stratigraphy comments: This member was previously known as the Horton Creek member of the Hannibal Formation. Due to the existence of a paraconformity between the Devonian-Mississippian contact, the exact stratigraphic position of these beds has been corrected several times since these sections were first documented in the early 1900's. Carter contains a complete description of the history of work done on these sections.
Lithology and environment
Primary lithology: silty dolomite
Lithology description: carter states that the fossils are found in only one lithology at each collecting locality, often only in one bed. later in the paper he describes that many of the fossils for stratigraphic locality 392 (horton creek) were found in the silty dolomitic facies. however, in general, the formation is described as containing fossils (brachiopods in particular) in biomicrite, oosparite, silty dolomite or dolomitic limestone, and calcareous sandstone or arenaceous limestone.
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Collection method comments: This collection is a Carnegie Museum of Natural Hisory collection.
Taxonomic list comments:Although molluscs are abundant at the type section of the formation and other macro invertebrates are very rare, only the brachiopod data are reported in this list.
Metadata
Database number:5695
Authorizer:A. Miller Enterer:D. Carlson
Modifier:C. Ferguson Research group:marine invertebrate
Created:1999-11-15 16:25:19 Last modified:2004-03-13 22:45:01
Access level:the public Released:2000-11-20 13:53:28
Creative Commons license:CC BY
Reference information

Primary reference:
351. J. L. Carter. 1988. Early Mississippian Brachiopods from the Glen Park Formation of Illinois and Missouri. Bulletin of Carnegie Museum of Natural History (27)1-82 [A. Miller/D. Carlson]